What's the difference between using :Wait() and wait() in this scenario?

I read somewhere that using :Wait() along with an event would significantly improve performance compared to just using wait(). I'm wondering if the line of codes that i wrote has any difference and which one is more practical?

First code

local number = 0

spawn(function()
    repeat wait() until number == 10
    print('Ten!')
end)

for i = 1,10 do
    wait(1)
    number = number + 1
    print(number)
end

Second code

local runService = game:GetService('RunService')

local number = 0

spawn(function()
    repeat runService.Stepped:Wait() until number == 10
    print('Ten!')
end)

for i = 1,10 do
    wait(1)
    number = number + 1
    print(number)
end